Porous yet dense metal-free electro-materials for compact energy storage

Abstract

Metal-free electro-materials, made of mainly conjugated carbon atoms as well as other elements, allow the development of abundant porosity and good conductivity. Most importantly, metal-free electro-materials are preferential in terms of sustainability, chemical variety and processability. Nevertheless the challenge of using metal-free materials is to increase the density. Professor Quan-Hong Yang at Tianjin University and co-workers recently conducted a series of studies on increasing the density of metal-free electro-materials via engineering the porosity and texture at nanoscale and has succeeded in achieving very high volumetric capacities with several graphene-based macro-assemblies and their composites with polymers or sulfur